International Door Closers 853 - Size 3 Spring - Standard (Regular) Arm Assembly - Hydraulic Surface Mount Door Closer - Finish: (AL) Aluminum Standard (regular) Arm -Size 3 Spring Power - UL Listed - Surface Mount Hydraulic Door Closer Length:8 7/8" - Mounting Holes: 8 3/16" x 3/4" - Overall Height:4 3/4" - Finish: (AL) Aluminum Suitable for Exterior Doors up to (36" Swing Out) (32" Swing In) Interior Doors up to 42" Commercial Door Closer - Two Installation Options: Standard or Top Jamb - Factory Warranty Two adjustment valves: Adjustable closing speed - adjustable latching speed